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Topological design of ultrastrong MXene paper hosted Li enables ultrathin and fully flexible lithium metal batteries

Journal Article


Abstract


  • Ultrathin Li metal anode with a thickness of <30 μm in combination with state-of-art cathodes could promise high-energy lithium metal batteries (LMBs). Here, we report a facile spin steaming technology to design the topological structures of Ti3C2Tx MXene film as Li host by mixing a trace of cellulose nanofiber (CNF). The interlocked topological microstructure between MXene sheets and microspheres-forming assisted by CNF contributes greatly to enhanced mechanical strength and flexibility of the resultant MXene@CNF film. More importantly, the MXene sheets with abundant Li nucleation sites shows a desirable affinity for Li. As a result, a flexible, ultrathin (~25 μm), and self-supporting MXene@CNF/Li composite anode without rampant Li dendrites, and with favorable cycling stability with high real capacity of Li is realized. The as-obtained hybrid Li anode matches with flexible self-supporting LiFePO4/cellulose nanofiber (LFP@CNF) cathodes to construct fully flexible LMBs with high specific capacity and outstanding stability.

Publication Date


  • 2020

Citation


  • Wang, C. Y., Zheng, Z. J., Feng, Y. Q., Ye, H., Cao, F. F., & Guo, Z. P. (2020). Topological design of ultrastrong MXene paper hosted Li enables ultrathin and fully flexible lithium metal batteries. Nano Energy, 74. doi:10.1016/j.nanoen.2020.104817

Scopus Eid


  • 2-s2.0-85084915992

Web Of Science Accession Number


Volume


  • 74

Abstract


  • Ultrathin Li metal anode with a thickness of <30 μm in combination with state-of-art cathodes could promise high-energy lithium metal batteries (LMBs). Here, we report a facile spin steaming technology to design the topological structures of Ti3C2Tx MXene film as Li host by mixing a trace of cellulose nanofiber (CNF). The interlocked topological microstructure between MXene sheets and microspheres-forming assisted by CNF contributes greatly to enhanced mechanical strength and flexibility of the resultant MXene@CNF film. More importantly, the MXene sheets with abundant Li nucleation sites shows a desirable affinity for Li. As a result, a flexible, ultrathin (~25 μm), and self-supporting MXene@CNF/Li composite anode without rampant Li dendrites, and with favorable cycling stability with high real capacity of Li is realized. The as-obtained hybrid Li anode matches with flexible self-supporting LiFePO4/cellulose nanofiber (LFP@CNF) cathodes to construct fully flexible LMBs with high specific capacity and outstanding stability.

Publication Date


  • 2020

Citation


  • Wang, C. Y., Zheng, Z. J., Feng, Y. Q., Ye, H., Cao, F. F., & Guo, Z. P. (2020). Topological design of ultrastrong MXene paper hosted Li enables ultrathin and fully flexible lithium metal batteries. Nano Energy, 74. doi:10.1016/j.nanoen.2020.104817

Scopus Eid


  • 2-s2.0-85084915992

Web Of Science Accession Number


Volume


  • 74